Required Product Added Before Clicking "add To Cart"

I use quantity discounts with a minimum quantity on products with a color/size option grid from alt-teams. For some products they require a required product which is basically used as an additional fee.

The problem is when I change a quantity which is still below the first tier of the minimum quantity, the required product is added even before I ever click the "Add To Cart" button. So, if I decided against adding this product to the cart, the required product is still added to the cart.

Is there a way to move the function called to add the required product to the add to cart button function instead?

It looks like a bug. Try to reproduce it on the demo store and post to the bug tracker